At some point, you're likely to have a property
public string ExecutablePath { ... }
(not that you should try to avoid abbreviations like "Exe" too). That being the case, your question might then be moot much of the time as you can use C# 3.0's auto-properties
public string ExecutablePath { get; set; }
you now no longer have to come up with a name for the backing store variable. No name, no question/debate about naming conventions.
Obviously, auto-implemented properties aren't always appropriate.
